Scraper control



Oct. 18, 1932. H. H. BARBER 1,382,736

SCRAPER CONTROL Filed Oct. 7. 1929 s Sheets-Sheet 1 Oct. 18, 1932. H. H.BARBER 1,832,736

SCRAPER CONTROL Filed Oct. 7, 1929 s Sheets-Sheet 2 hazy/7f Zara r01 Oct. 18, 1932. BARBER 1,882,736

SCRAPER CONTROL Filed Oct. 7. 1929 5 Sheets-Sheet 5 Patented Oct. 18, 1932 v UNITED STATES I PATENT OFFICE HARRY H. BARBER, OI AURORA, ILLINOIS, ASSIGNOB TO BARBER GREENE COMPANY, 01'

' AURORA, ILLINOIS, A CORPORATION 01' ILLINOIS soaarnn con'mon Application filed October 7, 1929. Serial No. 387,810.

This invention relates to a scraper control for loading machines and it is an object of this invention to provide means for adjusting or varying the transverse position of the 1, scraper in order that it may operate in a vertically inclined plane with respect to the horizontal plane of the loading machine and may be vertically adjusted in accor ance with the topography of the ground.

The invention comprises the novel structure and combination of parts hereinafter described and more particularly pointed out and defined in the appended claims.

In the accompanying drawings, which illustrate a preferred form of this invention and in which similar reference numerals refer to similar features in the diiferent views:

Figure 1 is a fragmentary side elevational view of a loading machine having a scraper go which is controlled according to this invention.

Figure 2 is a diagrammatic top plan view of certain parts of the loading machine illustrating the control for the scraper.

: Figure 3 is an enlarged fragmentary front elevational view of the scraper.

Figure 4 is a fragmentary and enlarged top plan view of the scraper and associated parts.

Figure 5 is an enlarged end elevational vlew of the scraper and its support.

In the drawings, there is shown a part of a loading machine including a conveyor boom 1 having an endless bucket chain 2 thereon which is diagrammatically illustrated. The material is adapted to be fed to the buckets by a pair of rotatable feeding drums 2a and the nose of the boom is properly held in spaced relation from the frame of the loader by means of suitable radius rods 3 as is well known in the art. A scraper 4 is attached to the machine in a manner that will be presently explained and travels behind the rotatable feeding drums 211 for carrying forward any lost or stray material and such material as may be returned from the bucket line through a chute 5. Where the surface of the ground cerned with the manner of mounting the scraper and adjusting the same according to the inclination of the topography of the ground.

The scraper 4 is secured upon a shoe 6 and a pair of arms 9 are pivoted to the ends of the shoe by suitable means such as a pair of angle brackets 7 and 8. The rear end of each arm 9 is pivoted to a stationary support 10 upon the framework of the machine as diagrammatlcally shown in Figure 2. The-shoe is also supported by a pair of converging arms.

11 which are pivoted at their rear ends upon a shaft 12 and are pivoted at their. forward ends to suitable angleclips 13 secured to the shoe whereby the scraper is supported at a medial point as well as at the ends.

In referring to Figure-5, it will be noted that a plate 14 is riveted to the arm 9 and a vertical plate 15 is connected to the plate 14 by means of pins 17 and slot 18 forming a pin and slot connection between said two plates for limited flexibility. The plate 15 is riveted to an angle bar 16 which extends upwardly and a front cured at its lower end between the shoe 6 and the shoe 4, and extends vertically and overlaps the angle bar and has an upper horizon- ?)al flange 19a which extends over said angle In referring to Figure 3, it will be noted that the plate 19 extends coextensive with the scraper and has a cut portion 19b inwardly from each end to provide for the radius arms 3 for the boom. Adjacent the cut out portion 19?), there is a vertical angle member 20 which has one flange attached to the plate 19 with the other flange extending rearwardly. A pin 21 is carried by each arm 3 and extends through a slot 22 in the angle ".20 as shown in Figure 5. It will of course be understood that the construction just doscribcd is duplicated at the other side of the machine. Near the center, the plate 19 is further cut away to receive the return chute 5.

A pair of pulleys 23 are suitably anchored to the scraper as shown in Figures 2 and 4. A pair of winding shafts 24 and 25 are suitably supported upon the framework of the loader. A cable 26 has one end secured to the plate 19 which is sewinding shaft 24 and extends around the adjacent pulley 23 and then up to the winding shaft 25 where it is wound upon a drum 27. A second cable 28 is secured to the winding shaft 25 and extends around the other pulley 23 and hence up to the winding shaft 25 where it is secured upon a winding drum 29. It

"will be noted that the cables 26 and 28 are differently wound upon the winding shaft24. One is Wound in a clockwise direction and the other is wound in an anti-clockwise direction, with the result that when the winding shaft 24 is rotated b its hand wheel 30 one cable will be shorte and the other will be lengthened whereby the scraper will be vertically tilted. The cables 26 and 28 are however wound in the same direction uipon the' drums 27 and 29 so that if the win ing shaft 25 is rotated, the scraper will be ele- Vated in a truly horizontal plane. The shaft 25 is adapted to be manuallyrotatedby a hand wheel 31 which is geared to the shaft 25 as shown in Figure 1. During the adjustment of the scraper by means-of the two winding shafts, the pin 21 on the radius arm 3 can ride in the slot 22 so that there will be no interference with the radius rod. The pin and slot connection between the plates 14 and 15 will provide sufficient flexibility for the adjustments that are required.

According to this invention, the scraper can be readily adjusted to any desired angularity in accordance with the topography of the ground over which it is required to travel. Consequently little or no material will be leftbehind and a much cleaner and eflicient job will result therefrom.

During the different adjustments of the scraper whereby its angularity is changed,

the pivot points that connect the scraper with the loader have suflicient flexibility and looseness to allow for all desired adjustments.

According to this invention, it is hence possible to adjust the scraper according to the topography over which it is moving so that no material will be left in its path.

I am aware that numerous details of construction may be varied through a wide range without departing from the principles of this invention, and I therefore do not purpose limiting the patent granted otherwise than necessitated by the prior art.

I claim as my invention:

1. In a loading machine, a scraper mounted for vertical movement, a winding shaft, cables reversely wound on said winding shaft, pulleys on said scraper around which said cables pass, and a second win ding mechanism connected to the free ends of said cables.

2. In a machine of the character described, a scraper mounted for vertical and transverse tilting movement, a winding shaft, drums on said winding shaft, cables wound upon said drums and movably attached to said scraper, and a second winding shaft upon which the ends of said cables are reversel wound.

3. a machine of the character described, a scraper mounted for vertical and transverse tilting movement, a winding shaft, cables reversely wound upon said windin shaft, means for connecting said cables witE said scraper for relative movement with respect thereto, and a second windin shaft upon which said cables arewound int e same direction.

4. In a machine of the class described, a scraper mounted for vertical and transverse tilting movement, a winding shaft, means for vertically elevating said scraper and trans versely tilting the same comprising a winding shaft, cable means reversely wound upon said shaft and movably connected to said scraper, whereby said scraper may be transversely tilted, and a second winding shaft connected to said cable means for elevating said scra er.

In testimony whereof I have hereunto subscribed my name at Aurora, Kane County,

Illinois.

HARRY H. BARBER. 

